Can organometallic noble gas compounds be observed in solution at room temperature? A time-resolved infrared (TRIR) and UV spectroscopic study of the photochemistry of M(CO)(6) (M=Cr, Mo, and W) in supercritical noble gas and CO2 solution

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	Can organometallic noble gas compounds be observed in solution at room temperature? A time-resolved infrared (TRIR) and UV spectroscopic study of the photochemistry of M(CO)(6) (M=Cr, Mo, and W) in supercritical noble gas and CO2 solution
	Sun, XZ ; George, MW ; Kazarian, SG ; Nikiforov, SM ; Poliakoff, M
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	1996-10-30
卷号	118 期号:43 页码:10525-10532
ISSN号	0002-7863
英文摘要	The first systematic TRIR study of the photolysis of M(CO)(6) in supercritical Ar, Kr, Xe, and CO2 permits the observation of M(CO)(5)L (M = Cr, Mo, and W; L = Ar (W only), Kr, Xe, and CO2). The second-order rate constants for the reaction of M(CO)(5)L with CO have been evaluated and the reactivity for each metal is Kr > Xe approximate to CO2. For M(CO)(5)Kr, M(CO)(5)Xe, or M(CO)(5)(CO2) the reactivity is Cr approximate to Mo > W. In supercritical Kr doped with either Xe or CO2, the M(CO)(5) moiety interacts with Xe or CO2 in preference to Kr. The effect of solvent density on the rate of the reaction of W(CO)(5)(CO2) with CO has been investigated. This is the first time that the density dependence of any dissociative reaction has been followed in this way in supercritical solution. Our observations demonstrate that the reaction of W(CO)(5)(CO2) with CO in scCO(2) is predominantly a dissociative process. The activation energies for the reaction of W(CO)(5)Xe and W(CO)(5)(CO2) with CO and the relative wavelength of the visible absorption maxima for Cr(CO)(5)Xe and Cr(CO)(5)(CO2) all indicate a similar strength of interaction for Xe and CO2 with the M(CO)(5) moiety.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:A1996VQ08900023
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/44609]
专题	中国科学院化学研究所
作者单位	1.UNIV NOTTINGHAM,DEPT CHEM,NOTTINGHAM NG7 2RD,ENGLAND 2.CHINESE ACAD SCI,INST CHEM,BEIJING 100080,PEOPLES R CHINA 3.MOSCOW GEN PHYS INST,MOSCOW 117942,RUSSIA
推荐引用方式 GB/T 7714	Sun, XZ,George, MW,Kazarian, SG,et al. Can organometallic noble gas compounds be observed in solution at room temperature? A time-resolved infrared (TRIR) and UV spectroscopic study of the photochemistry of M(CO)(6) (M=Cr, Mo, and W) in supercritical noble gas and CO2 solution[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,1996,118(43):10525-10532.
APA	Sun, XZ,George, MW,Kazarian, SG,Nikiforov, SM,&Poliakoff, M.(1996).Can organometallic noble gas compounds be observed in solution at room temperature? A time-resolved infrared (TRIR) and UV spectroscopic study of the photochemistry of M(CO)(6) (M=Cr, Mo, and W) in supercritical noble gas and CO2 solution.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,118(43),10525-10532.
MLA	Sun, XZ,et al."Can organometallic noble gas compounds be observed in solution at room temperature? A time-resolved infrared (TRIR) and UV spectroscopic study of the photochemistry of M(CO)(6) (M=Cr, Mo, and W) in supercritical noble gas and CO2 solution".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 118.43(1996):10525-10532.